Double ferrule paint brush



FIG. 1 is a top plan view of a double ferrule paint brush showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof; and,

FIG. 7 is an isometric view thereof. 

The ornamental design for a double ferrule paint brush, as shown and described. 